package com.itheima.test;
/*
整数数组怎么变成字符串通过ArraytoString方法
 */
public class Demo4 {
    public static void main(String[] args) {
        int[] arr = {1,6,5,4};
        String s = arrayToString(arr);
        System.out.println(s);

    }
    public static  String  arrayToString(int[] arr){
        StringBuilder sb = new StringBuilder();
            sb.append("[");
        for (int i = 0; i < arr.length; i++) {
            if (i==arr.length-1){
                sb.append(arr[i]);
            }else {
                sb.append(arr[i]).append(",");
            }
        }
        sb.append("]");
        String s = sb.toString();
        return s;
    }
}
